Supporting apparatus for aircraft propulsion and sustaining means



Jan. 20, 1931.

P. MAIWURM SUPPORTING APPARATUS FOR AIRCRAFT PROPULSION AND SUSTAININGMEANS Filed July 29, 1929 3 Sheets-Sheet l KW WW mm BY w W ATTORNEY1931; MAIWURM 1,789,529

SUPPORTING APPARATUS FOR AIRCRAFT PROPULSION AND SUSTAINING MEANS FiledJuly 29,- 1929 3 Sheets-Sheet 2 INVENTOR. PAUL Mmwunm ATTORNEY Jam, 26,1931. Y P. MAIWURM SUPPORTING APPARATUS FOR AIRCRAFT PROPULSION ANDSUSTAINING MEANS Filed July 29, 1929 5 Sheets-Sheet 5 [N VEN TOR. PAL/LMAIWUQM ATTORNEY each side margin of the fuselage are girder 1 members4, as shown inFigs. 1 and 3. Each f of these girder'members consists oftwo upwardly extending strut members 4a which are connected'together attheir extended ends by a cross member 4?).- Each crossmember p and crossmembersas indicated in F ig. 6. rshaft 5a extends transversely througheach side member hand. into journals formed in each side of-thecross.member'4bofthe girder members4, as shown best in Fig;6.

The lower'portion 5b. of each side member 5' below theijournalledportion thereof ex tends inwardlyat' an angle towards thesimilarportionof the-other frame. side member,

asshownin Fig; 1. IThisfportion has preferablythe cross sectionof'awing, as indic ted in Fig.7, so as to -assist in the sustain ng'of theaircraft. v

, Connected between these two inwardly extendingportions 5b is a basemember 6 which als'o has the cross sectionof awing, as indi- "catedinFigB. Secured to the base member. 6 by suitable rods and bracing isamo'tor'sup' port 7 upon which'is mounted a motor ,8 of any suitabledesign, as indicated by the I dotted lines in FigSI-l and 3.

, Connected to the base member 6', as shown in .F igs. 1 and 3, or toany other portiono'f r the supporting apparatus, are cables 9a whichpass over suitable'pulleys 9b and form the porting. apparatus 9. 1Theup'per end. ofthe side members 5 are ,7 means-for shiftingthepositionof the sup- 4o,

co'n nect'ed "tr igether by'a cross member 10 which whenthe aircraft isin its normal pofin'spn its inner "ab y *1 lly sition extendhorizontally. Thiscross memher has 'thecross sectionof awing and may inorder to increase the wing area of the aircraft, extend; past the outersides ofthe up; 1 right; members-5; as shown in Fig. l. Brae-1 ingll'extends fromfthe upper-, inner portion. ofeach frame side. member 5'to the underside ofthe cross member10, as indicatedinFig} 1.

The propellin and sustaining means-.12 is substantially [a'rrel shapedtube havingf and outer surfaces preferpositioned so as to formiafhelixwhich increases in pitch from the forward to the rear 1,743 a a anew1 13 .Hevi rer;

fi a' ab 0f fii'nctioningi w e js pl er ed y my supportinggapparatus,.may.be. used, r I "A! Shaft 11; extends through oany-typeofpropulsionfand sustainingfineans,

bracingj 1-1 parallel'with the axisof "rotation P h? Bear -ice a d. s ep an idler pulley'l3. which is preferably provided with a streamed linedrim 13a.

astream linedbody, as shown best in Fig. 5.

The one idler pulley 13' is positioned a slight Qdistance forward oftheforward edge ofthe "frame side members 5; whilethe rear pulley R13 ispositioned aslight distance rearwardly "of the rear side of the frameside member 5. The other shaft 11d is provided with idler pulleys '14similar in construction to the pillleys 13 butv the planeof the cablegroove in each pulley 14; is: in slightlyoflfset relation sponding'pulley 13, as indicated in Fig." 3.

Mounted at each end of the one shaft 11a. is i The r hub 13?) of eachpulley 13 together with fit-' ,tings11?) on the shaft 110; preferablyforms third set of'idler pulleys 15 are mounted underneath the basenemberfi in a suitable housing 6a with, theplanes of their groovesbetweenthose of the idler pulleys 13 and 14.

I A' cable 16 passes around each idler pulley 13Iandaround a track 12aformedin'the surface ofthe propulsion and sustaining means 12. as shownin Fig. 2. A"c' able17 passes around each pulley l4 and around a similartrack 12?) sp acedslightly fromthe track-12a. I

A ,cable 18 passes around. each, idler sitioned between; the tracks 11and 12, as" [shown inFig. 2. Thedistance betweenfthe [planes ofth'eidlerpulleys are ofise't' so as-to beinaline with their-respective grooves126a,:

12b and 120. In order to .give the best: stability tothesustainingmeansthese sets of grooves are positioned abouta third of the distancefrom each end. j I Z HI 1 order to inaintain all of the cablestaut,

- a tensionmeans 19 is provided, as indicated in Fig. 8,fwhi ch drawsthe 'axle15a' support lp'ulley .15 "and around a track 120. in thesustaining and .propulsionmeanspd 3. These drive cab1es'fit ,in grooves12d.

formed'in the periphery of the-propulsion and sustaininjg means, asshown i'n; Fig. 2.

'1 indicated 'by the diagrammatical View Figigjseveral sets of cablesand their idler pulleys securely hold the sustaining means in desiredposition and atthe same time permit free rotation thereof. As the'cables V v p A. p 'mayberelativelysmalland consequently of- I of i tube-YT l l i' 1 m re"* ferfbuta small resistanceand the pulleys and rframework are jspaced {from the Propulsion and sustainingmeans,the'slipstreamabout p -w u. so. @aQit1dWtat wi t portions-of thesupporting; apparatus may be 5 easilyf'stream lined ormay used in sustaining the aircraft theref..-is a minimum Jae though'parallel to theplane of the come 80 I in spaced relation to each other and to "saidpropelling means, the onev member of each pair ofpulleys'being oppositesaid propelling means near the forward portion thereof, and the othermember of each pairoof idler pulleys being opposite said propellingmeans near the rearend'thereof, and a cable means p'assingaroun'd saididler pulleys and around said propelling means for revolubly supportingthe latter relatiye to said. i p leys,'-a motor mounted'in spacedrelation to f-me'ans for rotating said with sa1dmotor,,and frame meanscommon said jpropelling means, pulley and cable propelling, means to allof said pulleys, said frameqmeans piyotally connected with saidfuselage.

11. The combination with an aircraft fuselage: and propelling andsustaining means, of pulleys supported in spaced relation to each jotherand toi-said propelling and sustaining lmeans, a cable passingaround said-pulleys andsaidpropelling and sustaining means,for-supporting: said sustaini'ngi means in spaced relation to saidpulleys, a motor" mounted in spaced relation to sai propelling'andsustaining means, pulley P and cable means for rotating said propollingand 'torpand frame means common to all ofsaid sustaining-"means withsaid mopulleys, said frame means pivotally e nnected with said fuselage.I a

12.=The combination with an aircraft fuselage and propelling andsustainin means, of pairs'of idler pulleys-supported in spaced relationto each other andto said m'eans relative to'sa-id fuselage.-

means pivotally and controllably connected with said fuselage, portionsof said frame havingthe cross section of'fa Wing so as to assist' the rsustaining action of said propels ling and sustainingmeans. 1

14; Inf-a deviceof tlieclass deScribedQthe combination With a fuselageand aircraft 'propellingand 'sustalnlng means, of a plu- 'rality ofpulleys arranged inspaced relation plurality of cables each extendingaround one offsaid pulleys and around said'propel- 'ling and sustainingmeans {so as to permit only rotary motion of said propelling andsustaining means "relative to said pulleys, a 'motor -mounted' in spacedrelation for rtating said propelling and sustaining means withsaidmotor, a frame means forsupport- :ingea'ch of said'pulleys andsaidmotor, said frame means pivotally' connected to saidfuselage sofastoipermit pivotal movement of said propelling nd sustaining Intestimonywhereof, I have hereunto set my handat San Diego, Californiathis 19th day ofJuly, 1929. v

propelling-and sustaining me an s,"the one i x member of 'eachpair' ofpulleys being opposite said propelling andsustaining means near theforward 'portionther'eof, and the other member of reach 'pairof idlerpulleys being oppositefsaid propelling and, sustain v1ngmeans-neartherearendthereof, and a 7 jcable means passing around; said idler -pul'-'.ter'relative to said pulleys, frame means I eysfandaround said p uingm'eansfor revolubly supporting the lat,-

oomn on to'all of said pulleysfsaidframe v means piviotally'connectedfwith said fuse 'means; L a r I v .13; The comblna-tio'n withan aircraft fut sustaining means,

i mounted ink j section of a wing so as to assist the sustainla'ge,.portions*ofsaid frame having th'ecross 5 ing action of said propellingandsufiaininga to each other and to said sustaining meanspa

